from multiprocessing import Process, Queue
import time
from typing import List
import os


class Worker(object):
    def __init__(self, queue: Queue):
        self.run_flag = True
        self.queue = queue
        self.process = Process(
            target=self.handle_jobs,
            args=(self.queue,)
        )
        time.sleep(1)
        self.process.start()

    def stop(self):
        self.queue.put(['exit'])
        self.process.join()

    @staticmethod
    def handle_jobs(queue: Queue):
        while True:
            if queue.empty():
                time.sleep(1)
                continue
            cmd_list: List[str] = queue.get()
            print('received job:\n', cmd_list)
            if cmd_list[0].lower() == 'exit':
                break
            cmd_str = ' && '.join(cmd_list)
            os.system(cmd_str)


if __name__ == '__main__':
    work_queue: Queue = Queue()
    worker = Worker(queue=work_queue)
    work_queue.put(['echo "hello world"', 'echo "hello world again"'])
    worker.stop()